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<?php |
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/** |
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* This file is part of Railt package. |
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* |
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* For the full copyright and license information, please view the LICENSE |
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* file that was distributed with this source code. |
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*/ |
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declare(strict_types=1); |
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namespace Railt\Compiler\Grammar\Delegate; |
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use Railt\Compiler\Grammar\LookaheadIterator; |
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use Railt\Lexer\Result\Eoi; |
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use Railt\Lexer\Result\Token; |
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use Railt\Lexer\TokenInterface; |
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use Railt\Parser\Ast\LeafInterface; |
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use Railt\Parser\Ast\NodeInterface; |
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use Railt\Parser\Ast\Rule; |
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use Railt\Parser\Ast\RuleInterface; |
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/** |
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* Class RuleDelegate |
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*/ |
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class RuleDelegate extends Rule |
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{ |
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/** |
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* @return iterable|TokenInterface[]|LookaheadIterator |
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*/ |
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public function getInnerTokens(): iterable |
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{ |
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return new LookaheadIterator((function () { |
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yield from $this->getTokens($this->first('RuleProduction')); |
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yield new Eoi(0); |
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})->call($this)); |
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} |
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/** |
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* @param RuleInterface|NodeInterface $rule |
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* @return \Traversable |
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*/ |
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private function getTokens(RuleInterface $rule): \Traversable |
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{ |
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/** @var LeafInterface $child */ |
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foreach ($rule->getChildren() as $child) { |
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if ($child instanceof RuleInterface) { |
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yield from $this->getTokens($child); |
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} else { |
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yield new Token($child->getName(), $child->getValues(), $child->getOffset()); |
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} |
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} |
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} |
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/** |
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* @return string |
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* @throws \Railt\Parser\Exception\InternalException |
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* @throws \Railt\Parser\Exception\ParserException |
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*/ |
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public function getRuleName(): string |
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{ |
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return $this->find('RuleName > T_NAME')->value(); |
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} |
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/** |
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* @return bool |
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* @throws \Railt\Parser\Exception\InternalException |
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* @throws \Railt\Parser\Exception\ParserException |
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*/ |
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public function isKept(): bool |
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{ |
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return (bool)$this->first('ShouldKeep'); |
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} |
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/** |
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* @return null|string |
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* @throws \Railt\Parser\Exception\InternalException |
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* @throws \Railt\Parser\Exception\ParserException |
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*/ |
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public function getDelegate(): ?string |
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{ |
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return $this->find('RuleDelegate > T_NAME')->value(); |
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} |
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} |
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railt /
compiler
It seems like the type of the argument is not accepted by the function/method which you are calling.
In some cases, in particular if PHP’s automatic type-juggling kicks in this might be fine. In other cases, however this might be a bug.
We suggest to add an explicit type cast like in the following example: